I couldn't find an electronic copy of the Scheduled Maintenance guide. There is a thread here asking about it, but all of the answers point to the owner's manual and repair guides, not the Scheduled Maintenance Guide, which is separate.
Tundra Solutions has an electronic copy, but it is not specific to the TCH, it pertains to all Toyotas (which makes me wonder how many mistakes or omissions there are).
I found a pretty good site that has the maintenance schedule online, so I thought I'd share:
http://smg.toyotapartsandservice.com/
This site does pertain to all Toyotas, but the good thing is that once you choose your car, it shows you only the pertinent information.